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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct Node
  5. {
  6. 	int value;
  7. 	Node *next;
  8. };
  9.  
  10. int find(Node* head, int n) {
  11.     int index = -1;
  12.     while (head) {
  13.         ++index;
  14.         if (head->value == n) {
  15.             return index;
  16.         }
  17.         head = head->next;
  18.     }
  19.     return -1;
  20. }
  21.  
  22.  
  23. int main()
  24. {
  25. 	Node *list = new Node{1, new Node{2, new Node{3, nullptr}}};
  26.  
  27. 	cout << find(list, 1) << endl;
  28. 	cout << find(list, 2) << endl;
  29. 	cout << find(list, 3) << endl;
  30. 	cout << find(list, 4) << endl;
  31.  
  32. 	return 0;
  33. }
Success #stdin #stdout 0s 4248KB
comments (?)
stdin 
Standard input is empty
stdout 
0
1
2
-1
https://ideone.com/FRhZUd
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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